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Diss Factsheets

Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14 June 2016 to 17 July 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
0.955 other: dimensionless
Temp.:
20 °C
Type:
density
Density:
955 kg/m³
Temp.:
20 °C

CALIBRATION

- Pressure readings and the calculated volume for the reference and sample cells are shown in Table 5 (below).

- Mean reference cell volume was calculated as 90.867 cm3

- Mean sample cell volume was calculated as 149.068

- Since the reference cell volume and the sample cell volume were within the defined tolerances (90.953 ± 1.0 cm3 for the reference cell volume and 149.225 ± 1.0 cm3 for the sample cell volume), the gas comparison pycnometer was considered acceptable for use.

Table 5

Determination

P1 (psig)

P2 (psig)

P3 (psig)

P4 (psig)

Reference cell volume (cm3)

Sample cell volume (cm3)

1

17.984

6.810

17.530

8.686

90.839

149.050

2

17.367

6.577

17.418

8.630

90.893

149.116

3

17.438

6.605

17.320

8.584

90.870

149.038

SAMPLE

- The mass of the vessel, vessel and test item, and the calculated mass of the test item are shown in Table 6 (below).

- Pressure readings obtained for the vessel and vessel containing test item are shown in Table 7 (below).

- Calculated volumes and density obtained are shown in Table 8 (below).

- Overall mean density was determined to be 955 kg/m3

- Relative density was determined to be 0.955

- Temperature was reported as 20.0 ± 0.5 °C

Table 6

Determination

Mass of vessel (g)

Mass of vessel and test item (g)

Mass of test item (g)

1

31.5849

61.8983

30.3134

2

31.7787

61.8144

30.0357

Table 7

Determination

Replicate

Vessel

P1 sample (psig)

Vessel

P2 sample (psig)

Volume (cm3)

Vessel and test item

P3 sample (psig)

Vessel and test item

P4 sample (psig)

Volume (cm3)

1

A

17.500

7.049

14.3

17.218

8.068

46.0

1

B

17.532

7.062

14.4

17.179

8.051

46.0

1

C

17.460

7.032

14.3

17.084

8.010

46.1

2

A

17.490

7.047

14.4

17.256

8.076

45.8

2

B

17.301

6.971

14.4

17.258

8.084

45.9

2

C

17.432

7.023

14.4

17.217

8.066

46.0

Table 8

Determination

Mean volume of vessel (cm3)

Mean volume of vessel and test item (cm3)

Volume of test item (cm3)

Density

(kg/m3)

1

14.3

46.1

31.7

955

2

14.4

45.9

31.5

954

Conclusions:
The density of the test item was determined to be 955 kg/m3 at 20.0 ± 0.5 °C with a relative density of 0.955.
Executive summary:

GUIDELINE

The determination was carried out with a gas comparison pycnometer using a procedure designed to be compatible with OECD 109 (02 October 2012) and Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 (30 May 2008).

RESULTS

The density of the test item was determined to be 955 kg/m3 at 20.0 ± 0.5 °C with a relative density of 0.955.

Description of key information

Density of the test item was determined to be 955 kg/m3 at 20.0 ± 0.5 °C with a relative density of 0.955 (OECD 109 and EU Method A.3).

Key value for chemical safety assessment

Relative density at 20C:
0.955

Additional information

The determination was carried out with a gas comparison pycnometer using a procedure designed to be compatible with OECD 109 (02 October 2012) and EU Method A.3 Relative Density of Commission Regulation (EC) No 440/2008 (30 May 2008).